The Hooter Shooter is not what will determine what "the best" type of equipment or design that a bow/cam configuration is. All the HS does is shoot the bow the same way, every time. It doesn't care if shoots a single cam, dual cam, hybrid, or recurve. It will put the same arrow in the same hole EVERY time, even a severely bent arrow or waaaay outta whack-timed bow.
I think you have to add, "if shot at the same distance" If someone were shooting the Hooter Shooter at varying distances, you would see just how far this machine canl miss the previous hole. If the Hooter Shooter demonstrates one thing, it's that out-of-tune bows can shoot tuned arrows into the same hole, when the distance on each shot is identical. This is a far cry from what is required of an archer who is shooting at varying distances.
As for pro's shooting like a Hooter Shooter, well not all pros shoot to the same level. A lower level pro should benefit from the better system if there was one. Why can't this be demonstrated? If a pro that is not so machine-like, is shooting a slightly larger group, the group should be smaller with the better system. This doesn't seem to be happening. I don't believe anyone has ever demonstrated that a particular cam system is more accurate than another, when both are timed and tuned properly. Everything I've ever read has not been based on shooter results, but on theory. Theory that is not only unproven, but possibly wrong.